/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.flink.connectors.common.converter;

import java.io.Serializable;

/**
 * Interface used in SinkFunction or SourceFunction to convert Record to/from
 * flink.
 * @param <IN>
 * @param <R>
 */
public interface RecordConverter<IN, R> extends Serializable {
	RecordConverter NOOP_CONVERTER = new NoopConverter();
	R convert(IN message);

	/**
	 * Inner identical Converter.
	 * @param <T>
	 */
	final class NoopConverter<T> implements RecordConverter<T, T> {

		@Override
		public T convert(T record) {
			return record;
		}
	}

}
